Because it's safer and easier to reverse into a space and drive straight out than it is to drive in and reverse out, potentially into oncoming traffic or pedestrians.

Unless you specifically need access to your boot (trunk) always reverse in.

Sometimes backing in seems easier than backing out

There's a reason a number of large companies that self-insure mandate backing in for all their vehicles (Schlumberger, Cargill); it's demonstrably safer practice that results in less accidents when leaving the parking space. You can see everything when you back in that was there when you pulled up, and when you pull out, you're right up front looking forward into the lane as you pull out. You quickly learn how to back in, even without a backup camera, if you learn how to use your mirrors.

It is by far the statistically less accident prone method.

Reversing in is actually easier. As your car can turn tigther reversing than going front in.

Guess it's a non issue if you have massive parking spaces, but when space is tight every little bit helps.

so i can exit my conveyance with style and grace and upon returning i can haul ass out of that place

I worked at a job site prone to flooding so it was mandated to speed evacuations. I liked it and kept the habit.

Then some misogynist asshat told me it's a masculine thing to do and I should be careful to come across more ladylike. So added on a layer of spite and anti-bigot defenses to why I keep doing it.

Safer when pulling out of parking stall. Less blind spots.

Although I don’t back in. I drive through from one spot to the next in front of me. So I can drive out.

Because, unless you're driving a forklift, the point of a vehicle's rotation is in line with the rear wheels, meaning you can take turns at a much more acute angle when reversing than going forwards. Which makes backing into spaces much easier.

Notice that most of the half-assed parking jobs you see are generally people who have driven forward and left the car parked at a diagonal half out of the space, because getting the vehicle lined up in that situation is more difficult.

Because you have more control and visibility both when you get in and get out.

I do sometimes, mainly when it’s a car park with crap visibility as it means it will be easier getting out. I can reverse park easily, and having a rear vision camera means there’s zero risk of hitting anything anyway.

Also means the kids are further from the road when getting into/out of the car.